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Dorman CM640021 Clutch Master Cylinder

Brand	Dorman CM640021
Bore Diameter	0.625
Item Grade	Standard Replacement
Package Contents	Clutch Master Cylinder
Fits	Nissan · 12 vehicles

Direct replacement. Precision-engineered to match the original equipment design.

Standard replacement. A clutch master cylinder for dependable hydraulic clutch operation.

Bore diameter of 0.625 for consistent pedal response.

Cross-references AMS Automotive M0632, Beck/Arnley 072-9602 and Dorman - HELP 13623 for the same application. See all 14.

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Clutch Master Cylinder for Nissan Frontier and Xterra

This Dorman clutch master cylinder is a standard replacement for specific Nissan manual transmission applications. It is precision-engineered to match the original equipment design for reliable clutch hydraulic performance in the 1998-2004 Nissan Frontier and 2000-2004 Nissan Xterra.

Key Features

Direct replacement clutch master cylinder for manual transmission systems
0.625 bore diameter for the specified OE-style application
Standard replacement grade for everyday service use
Package contents: clutch master cylinder
Part number CM640021 for easy identification

Detailed Description

Dorman CM640021 is built for drivers servicing a leaking or malfunctioning clutch master cylinder on select Nissan trucks and SUVs. It is engineered to match the original equipment design, helping restore consistent hydraulic clutch operation on the 1998-2004 Nissan Frontier and 2000-2004 Nissan Xterra. This part cross-references Beck/Arnley 072-9602 for the same application.

Use CM640021 when replacing a worn clutch master cylinder on a Nissan Frontier or Nissan Xterra with the specified 5/8-inch bore size. The OE-style construction supports proper pedal feel and hydraulic response in manual transmission service.

Common Issues This Part Can Address

Clutch fluid leaking from the master cylinder
Soft, inconsistent, or sinking clutch pedal feel
Difficulty disengaging the clutch during shifting
Loss of hydraulic pressure in the clutch system
Wear-related failure in the original clutch master cylinder

Installation Notes and Tips

Verify bore diameter and vehicle application before installation. This part is listed for the 1998-2004 Nissan Frontier and 2000-2004 Nissan Xterra, with notes indicating compatibility with drum brake wheel cylinders featuring a 5/8-inch bore size. After installation, bleed the hydraulic system thoroughly and confirm pedal travel and clutch engagement before returning the vehicle to service.

Quality Assurance

Dorman manufactures this clutch master cylinder as a direct replacement component designed to match original equipment design requirements for the listed Nissan applications. Part number CM640021 is intended for standard replacement service in manual transmission repair.

This part fits 12 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Position	Notes
2004	Nissan	Frontier	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2004	Nissan	Xterra	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2003	Nissan	Frontier	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2003	Nissan	Xterra	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2002	Nissan	Frontier	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2002	Nissan	Xterra	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2001	Nissan	Frontier	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2001	Nissan	Xterra	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2000	Nissan	Frontier	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
2000	Nissan	Xterra	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
1999	Nissan	Frontier	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
1998	Nissan	Frontier	N/A	Compatible with drum brake wheel cylinders featuring a 5/8" bore size.
No rows match your filter.

Directly replaces or cross-references 14 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

AMS Automotive — M0632Beck/Arnley — 072-9602Dorman - HELP — 13623LuK — LMC386PERFECTION — 350119Sachs — SH5252136.42011306103S501306109Z4CM1090CM134518CM450090CMA350119M903319